Ground Driven Power Tillage Device

A power tillage device is provided having a passive rolling coulter as the prime mover for a power tillage blade which is carried in the lead of the coulter on a transfer case mounted as a radius arm on the counter shaft. The tillage blade rotates in the opposite direction from the coulter and is designed for optimum efficiency for shearing and lifting soil from a furrow

NEPAD and South-South Development Co-operation Between Cuba and South Africa

This paper will address the relevance and potential of South-South development co-operation between African and non-African states within the broader principles of the New Partnership for Africa’s Development (NEPAD). Through the consideration of one example of such co-operation between Cuba and South Africa, the benefits of such an approach to development will be shown not only to be coterminous with many of the ideals of the NEPAD, but that it supersedes this partnership by moving beyond the need to appeal to traditional donors for aid and provides a mutually beneficial aid approach

Constructing Ambiguous Identities: Negotiating Race, Respect and Social Change in 'Coloured' Schools in Cape Town, South Africa

South African social relations in the second decade of democracy remain framed by race. Spatial and social lived realities, the continued importance of belonging – to feel part of a community, mean that identifying as ‘coloured’ in South Africa continues to be contested, fluid and often ambiguous. This thesis considers the changing social location of ‘coloured’ teachers through the narratives of former and current teachers and students. Education is used as a site through which to explore the wider social impacts of social and spatial engineering during and subsequent to apartheid. Two key themes are examined in the space of education, those of racial identity and of respect. These are brought together in an interwoven narrative to consider whether or not ‘coloured’ teachers in the post-apartheid period are respected and the historical trajectories leading to the contemporary situation. Two main concerns are addressed. The first considers the question of racial identification to constructions of self-identity. Working with post-colonial theory and notions of mimicry and ambivalence, the relationship between teachers and the identifier ‘coloured’ is shown to be problematic and contested. Second, and connected to teachers’ engagement with racialised identities, is the notion of respect. As with claims to identity and racial categorisation, the concept of respect is considered as mutable and dynamic and rendered with contextually subjective meanings that are often contested and ambivalent. Political and social changes affect the context within which relations to identities are constructed. In South Africa, this has shaped a shift away from the struggle ideology of non-racialism and the respect that could be accrued through this. This process also complicated the status recognition respect historically associated with teaching. As local, national and global contexts have shifted and processes of globalisations have impacted upon cultural and social capital, the prestige and respect of teaching have changed. Appraisal respect has become increasingly important, and is influencing contested concepts of respect and identity. As these teachers exert claims to identities which include assertions of belonging in relation to race and attempts to earn respect, these processes are shown to be elusive and ambiguous. As a trans-disciplinary thesis, this work is located at the intersection of, and between, geography, education, history, anthropology, politics and sociology. Utilising a wide range of materials, from documentary sources, archives, participant observation, interviews and life histories, a multilayered story is woven together. The work’s originality stems from this trans-disciplinary grounding and its engagement with wide ranging theoretical approaches. This thesis argues that the lived experience of educators reflects the ambiguous and contentious experience of ‘coloureds’ in Cape Town. Drawing upon wider literature and debate, the contested location of education – its commodification – in South Africa reflects broader concerns of educationalists in the North and South, and is imbued within concerns over development and sustainability

Citizenship Education in South Africa: A report to schools

This report addresses findings from the research project 'Education, Citizenship Formation and Democratisation in South Africa'. This research asked: - How are citizens imagined by state institutions? - What educational practices are used in citizenship education? And - What tensions emerge between education policy, practice and learning

Experiments with Liquid Metal Walls: Status of the Lithium Tokamak Experiment

Liquid metal walls have been proposed to address the first wall challenge for fusion reactors. The Lithium Tokamak Experiment (LTX) at the Princeton Plasma Physics Laboratory (PPPL) is the first magnetic confinement device to have liquid metal plasma-facing components (PFC's) that encloses virtually the entire plasma. In the Current Drive Experiment-Upgrade (CDX-U), a predecessor to LTX at PPPL, the highest improvement in energy confinement ever observed in Ohmically-heated tokamak plasmas was achieved with a toroidal liquid lithium limiter. The LTX extends this liquid lithium PFC by using a conducting conformal shell that almost completely surrounds the plasma. By heating the shell, a lithium coating on the plasma-facing side can be kept liquefied. A consequence of the low-recycling conditions from liquid lithium walls is the need for efficient plasma fueling. For this purpose, a molecular cluster injector is being developed. Future plans include the installation of a neutral beam for core plasma fueling, and also ion temperature measurements using charge-exchange recombination spectroscopy. Low edge recycling is also predicted to reduce temperature gradients that drive drift wave turbulence. Gyrokinetic simulations are in progress to calculate fluctuation levels and transport for LTX plasmas, and new fluctuation diagnostics are under development to test these predictions. _________________________________________________

Direct Oral Anticoagulants in Asian Patients with Atrial Fibrillation: Consensus Recommendations by the Asian Pacific Society of Cardiology on Strategies for Thrombotic and Bleeding Risk Management

The disease burden of AF is greater in Asia-Pacific than other areas of the world. Direct oral anticoagulants (DOACs) have emerged as effective alternatives to vitamin K antagonists (VKA) for preventing thromboembolic events in patients with AF. The Asian Pacific Society of Cardiology developed this consensus statement to guide physicians in the management of AF in Asian populations. Statements were developed by an expert consensus panel who reviewed the available data from patients in Asia-Pacific. Consensus statements were developed then put to an online vote. The resulting 17 statements provide guidance on the assessment of stroke risk of AF patients in the region, the appropriate use of DOACs in these patients, as well as the concomitant use of DOACs and antiplatelets, and the transition to DOACs from VKAs and vice versa. The periprocedural management of patients on DOAC therapy and the management of patients with bleeding while on DOACs are also discussed